Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
749909Factored
FactorDigitsBitsDate
36887616758013392736765967215363385888939128.12022-05-14 19:01:30
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Tom CattrallBB83687574FBF0240
Verified (Factored)Cornelius CaesarBB83687574FBF0240
Verified (Factored)2003-05-19Brian J. BeesleyBB83687574FBF024622215
Verified (Factored)2016-06-01MadPooBB83687574FBF024240316
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-05-14aperson13DF6FB89C3631C86123354953
P-1 factors
DateFactorB1B2
2022-05-1436887616758013392736765967215363385888976000001204816062450
History
DateUserTypeResult
2022-05-14Graeme HolyoakeCERT
PRP Certification
Proof certified good
2022-05-14aperson1C-PRP
M749909/368876167580133927367659672153633858889 : 3DF6FB89C3631C86
PRP proof power = 6
PRP: Verified
Proof certified good
2022-05-14lycornF-PM1
Factor: 368876167580133927367659672153633858889 / (P-1, B1=7600000, B2=1204816062450)
2022-03-26Gordon SpenceNF
no factor from 2^67 to 2^68
2020-05-15Gordon SpenceNF
no factor from 2^66 to 2^67
2017-10-22Smok_bmv NF
no factor from 2^65 to 2^66
2016-06-01MadPooC-LL
BB83687574FBF024
2016-04-08lycornNF
no factor from 2^64 to 2^65
2015-11-26Sid & AndyNF-PM1
B1=7499090, B2=224972700, E=12
2015-10-21Gordon SpenceNF
no factor from 2^63 to 2^64
2015-10-21Gordon SpenceNF
no factor from 2^62 to 2^63
2015-03-05NRNF
no factor from 2^61 to 2^62
2013-10-28David CampeauNF-PM1
B1=1525000, B2=51850000, E=12
2012-07-14JossNF-PM1
B1=1499818
2011-10-29JossNF-PM1
B1=964992
2011-08-15JossNF-PM1
B1=482496
2011-06-19JossNF-PM1
B1=400000
2010-06-01Architects CubedNF
no factor from 2^60 to 2^61
2008-10-11Sturle SundeNF
no factor from 2^59 to 2^60
2008-10-11Sturle SundeNF
no factor from 2^58 to 2^59